Summons are special units that are only available for use during story missions/battles. Summons are divided into one of the five attributes (fire, water, earth, light and dark) and one of three ranks.

In order to use a summon's active ability, one must use burst points which are acquired each time a sphere is used in battle (1 burst point for each sphere). Based on the rank of the summons, the burst points will vary for using the active ability.